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Colour

#2B2F51

  • #2B2F51
  • Blue
  • Dark
  • Nearest: Dark slate grey

#2B2F51 is a blue with RGB values 43, 47, 81 and HSL 234°, 31%, 24%. It is a dark colour, so white text on it reaches 12.9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#2B2F51#2B2F51
HEX#2B2F51
RGBrgb(43, 47, 81)
RGB (0–1)0.1686, 0.1843, 0.3176
RGB percentages16.9%, 18.4%, 31.8%
HSLhsl(233.7, 30.6%, 24.3%)
HSV / HSBhsv(233.7, 46.9%, 31.8%)
CMYK46.9%, 42%, 0%, 68.2%naive device-independent conversion; real print needs an ICC profile
24-bit integer2,830,161
CSS custom property--colour: #2B2F51;

Brightness & contrast

Relative luminance0.03141WCAG 2.x, 0 is black and 1 is white
Perceived brightness51 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.9:1
Contrast with white12.9:1WCAG normal text: AAA
Contrast with black1.63:1WCAG normal text: Fail
Greyscale equivalent#313131
Inverted#D4D0AE

Colour vision & accessibility

Protanopia#233352no red cones; affects about 1% of men; ΔE 4.8 from the original
Deuteranopia#203050no green cones; the most common form, about 1% of men; ΔE 4.2 from the original
Tritanopia#1F363Cno blue cones; rare, and affects men and women equally; ΔE 21.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.9:1WCAG large text: AAA
Contrast with black, large text1.63:1WCAG large text: Fail

Named colours

Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 28.92, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#514D2B
Analogous#2B4251, #3A2B51
Triadic#512B2F, #2F512B
Split complementary#513A2B, #42512B
Tetradic#512B42, #514D2B, #2B513A

Tints, shades & saturation

Lighter +40%#888EC0
Lighter +30%#676EAE
Lighter +20%#4E5694
Lighter +10%#3D4272
Darker −10%#191C30
Darker −20%#08080E
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1C2361
Less saturated −25%#3B3B42

Channel breakdown

R43
G47
B81
Red43 (16.9%)
Green47 (18.4%)
Blue81 (31.8%)
Hue233.68°
Saturation (HSL)30.65%
Lightness24.31%
Dominant channelBlue
Hex per channelR 2B · G 2F · B 51

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Every value on this page was computed from “2b2f51” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.